User Wojowu

55 votes

A conjectural trigonometric identity

answered Aug 1, 2019 at 15:07

43 votes

Expressing the Riemann Zeta function in terms of GCD and LCM

answered Dec 18, 2019 at 11:37

41 votes

Examples of notably long or difficult proofs that only improve upon existing results by a small amount

answered Sep 6, 2018 at 15:10

41 votes

Accepted

Why are the numbers counting "ever-closer" lattice paths so round?

answered Nov 12, 2021 at 21:55

40 votes

Accepted

Can a countable union of two-element sets be uncountable?

answered Feb 8, 2022 at 20:42

39 votes

Accepted

Assuming the Collatz conjecture is false, what is known about the size of the false set?

answered Mar 11 at 12:13

36 votes

Theorems with many distinct proofs

answered Aug 11, 2021 at 20:38

36 votes

The most outrageous (or ridiculous) conjectures in mathematics

answered Jan 18, 2017 at 13:58

33 votes

Accepted

$\operatorname{PSL}(2,\mathbb{F}_p) $ does not embed in $\mathfrak{S}_p$ for $p>11$

answered Aug 21, 2021 at 16:31

32 votes

Accepted

Existence of a model of ZFC in which the natural numbers are really the natural numbers

answered May 18, 2019 at 21:39

31 votes

Accepted

Motivation for zeta function of an algebraic variety

answered Mar 11, 2019 at 15:34

30 votes

Accepted

The Mompox Sequence: are all its terms different?

answered Jan 19 at 0:14

29 votes

Accepted

On the probability of the truth of the continuum hypothesis

answered May 19, 2018 at 11:10

24 votes

Accepted

Diophantine equation $3^n-1=2x^2$

answered Sep 20, 2016 at 14:48

24 votes

Hensel's proof that $e$ is transcendental

answered Feb 16, 2022 at 15:10

24 votes

Accepted

Why are there three kinds of non-archimedean geometry?

answered Dec 12, 2022 at 10:52

23 votes

When is 2 qualitatively different from 3?

answered Nov 9 at 20:16

23 votes

Accepted

Define $\mathbb{N}$ in the ring $\mathbb{Z}$ without Lagrange's theorem

answered Sep 10, 2016 at 9:56

22 votes

Accepted

Frankl's conjecture restricted to finite topological spaces

answered Nov 26, 2017 at 18:39

22 votes

Accepted

A property of 47 with respect to partitions into five parts

answered Dec 22, 2017 at 21:58

22 votes

Accepted

Biggest Field Of Characteristic $p$

answered Jan 26, 2019 at 21:28

22 votes

Accepted

Are the vertical sections of the Ackermann function primitive recursive?

answered Dec 12, 2020 at 11:16

21 votes

Accepted

Function whose sets of discontinuities and zeros are the rationals

answered Apr 10, 2021 at 14:49

21 votes

On Euler's polynomial $x^2+x+41$

answered Jun 10, 2019 at 14:56

20 votes

Accepted

Grothendieck's relative point of view and Yoneda lemma

answered May 7, 2022 at 12:38

20 votes

Accepted

Is there a set that intersects every line twice which is Lebesgue measurable or Borel?

answered Nov 7, 2021 at 14:37

19 votes

Accepted

Is $\mathbb{Q}$ the orbit of a rational function under iteration?

answered Jan 4, 2022 at 11:33

19 votes

Has Fermat's Last Theorem per se been used?

answered Mar 5, 2019 at 21:40

19 votes

Accepted

Topological proof that a Vitali set is not Borel

answered May 25, 2020 at 9:55

18 votes

Accepted

A family of Diophantine equations with no integer solutions but solutions modulo every integer

answered Aug 1, 2021 at 17:25

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227 Answers

A conjectural trigonometric identity

Expressing the Riemann Zeta function in terms of GCD and LCM

Examples of notably long or difficult proofs that only improve upon existing results by a small amount

Why are the numbers counting "ever-closer" lattice paths so round?

Can a countable union of two-element sets be uncountable?

Assuming the Collatz conjecture is false, what is known about the size of the false set?

Theorems with many distinct proofs

The most outrageous (or ridiculous) conjectures in mathematics

$\operatorname{PSL}(2,\mathbb{F}_p) $ does not embed in $\mathfrak{S}_p$ for $p>11$

Existence of a model of ZFC in which the natural numbers are really the natural numbers

Motivation for zeta function of an algebraic variety

The Mompox Sequence: are all its terms different?

On the probability of the truth of the continuum hypothesis

Diophantine equation $3^n-1=2x^2$

Hensel's proof that $e$ is transcendental

Why are there three kinds of non-archimedean geometry?

When is 2 qualitatively different from 3?

Define $\mathbb{N}$ in the ring $\mathbb{Z}$ without Lagrange's theorem

Frankl's conjecture restricted to finite topological spaces

A property of 47 with respect to partitions into five parts

Biggest Field Of Characteristic $p$

Are the vertical sections of the Ackermann function primitive recursive?

Function whose sets of discontinuities and zeros are the rationals

On Euler's polynomial $x^2+x+41$

Grothendieck's relative point of view and Yoneda lemma

Is there a set that intersects every line twice which is Lebesgue measurable or Borel?

Is $\mathbb{Q}$ the orbit of a rational function under iteration?

Has Fermat's Last Theorem per se been used?

Topological proof that a Vitali set is not Borel

A family of Diophantine equations with no integer solutions but solutions modulo every integer